Water pump device



March 18, 1941. G. s. SHUFE WATER PUMP DEVICE Filed July 1, 1940 l I Ill Vll/l/ /l fll' g II III N (l/l l r IN V EN TOR.

ATTORNEYS.

G. s. SHUPE 2,235,174

March '18, 1941;

' WATER PUMP DEVICE Filed July 1, 1-940 Z SheetS-She et 2 1.9 v 606-Jkzz'pa INVENTOR. BYM

ATTORNEYS.

Patented Mar. '18, 1941 UNITED STATES PATENT OFFICE 1 Claim.

This invention aims to provide a simplemeans whereby the piston of apump in a well can be operated without the use of pump rods, it beingpossible to raise the pump piston by means of a simple flexible element,novel means being provided for giving the piston a downward stroke.Another object of the invention is to provide novel means whereby .thepiston and associated parts can be raised readily out of the pump line.

It is within the province of the disclosure to improve generally and toenhance the utility of devices of that type to which the presentinvention apper'tains.

With the above and other objects in View, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made within thescope of what is claimed, without departing from the spirit of theinvention.

In the accompanying drawing-s:

Fig. 1 shows in vertical longitudinal section, a device constructed inaccordanc with the invention;

2 is a vertical longitudinal section at right.

angles to the cutting plane in Fig. 1;

Fig. 3 is a view similar to Fig. 1, but showing a piston and associatedparts at the limit of the upstroke;

Fig. 4 is a vertical longitudinal section showing the latches disengagedfrom a shoulder in the pump line, by means of a latch release on thepiston rod;

Figs. 5 and 6 are sections taken, respectively, on the lines 5-5 and 6-6of Fig. 4;

Fig. 7 is a fragmental longitudinal sectional view illustrating detailsconnected with the latch release;

Fig. 8 is an elevation showing a slight modification.

In carrying out the invention, there is provided a pump line P,including a pipe I, joined by a coupling 2 to a cylinder 3 having abottom intake 4 controlled by a check valve 5, the lower end of the pipeI forming a shoulder 6 within the coupling 2.

A valved piston l, of the usual construction, or-

end of the piston 8 is connected a flexible element 9, which functionsto raise the piston I.

At this point it should be noted that, as hereinafter described, a meansis provided for moving the piston I downwardly, and, therefore, a 5

long string of pump rods, which is inconvenient to handle, and costly tomake, may be dispensed with, the simple flexible element 9 beingsubstitulted.

The numeral l0 marks a transverse guide, 10 wherein the piston rod 8reciprocates. Latches H are pivotally mounted intermediate their ends,as shown at I 2, on the guide It, on opposite sides of the piston rod 8.Any suitable means may be provided for holding the upper portions of thelatches ll I releasably engaged beneath the shoulder 6. For example, thelower portions of the latches Ill may be drawn toward each other by apull spring M which connects them. It is not necessary, however, thatthe pull spring be used. Referring to Fig. 8, one of the latches isshown at Ma and is enlarged at its lower end to form a weight l 5, bothlatches being fashioned in that manner.

The numeral 15 marks a firusto-conical latch release, held by a setscrew I! in adjusted positions longitudinally of the piston 8, the latchrelease being located beneath the latches l I.

As a means for carrying the piston rod 8 and the piston I downwardly,there is provided a pull spring i8 having its upper endconnected by aset collar |9 to the upper portion of the piston rod 8, the lower end oithe spring being secured at 20 to the guide ill]. The spring l8 notonly-carries the piston rod 8 and associated parts downwardly, but alsoexerts an upward pull on the guide I!) and, in turn, keeps the upperends of the latches H engaged with the shoulder 6.

The operation of the device is simple. The piston rod 8 and the piston 1are raised by means of the flexible element 9, the parts 1 and 8 beingforced downwardly by the pull spring I 8. During the ordinary pumpingreciprocation oi th piston I, the release l6 does not come into contactwith the latches l I: but if the release it is raised to the position ofFig. 4, the latches ll are disengaged from the shoulder 6 and the istonrod 8 and associated parts can be lifted readily out of the well.

Having thus described the invention, what is claimed is:

A pump line including a cylinder, the pump line having an internalshoulder located above the cylinder, a piston mounted to reciprocate inthe cylinder, a piston rod carrying the piston, a 55 flexible,piston-raising element connected to the upper portion of the piston rod,a guide through which the piston rod slides, a. latch pivotally mountedintermediate its ends on the guide, e. weight at the lower end of thelatch and. constituting means for swinging the upper portion of thelatch outwardly, for engagement beneath the shoulder, and a, latchrelease on the piston rod, below the lower portion of the latch,engageable with the lower portion of the latch, upon a prolongedupstroke of the piston rod, to disengage the latch from the shoulder,and a pistonranising pull spring connected to the piston rod and to theguide.

GREEK S.

